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Finding the Fourth Proportional to 833.60, 1,250.40 and 443.46

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Solution

The fourth proportional to 833.60, 1,250.40 and 443.46 is: 665.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.60 : 1,250.40 = 443.46 : x
  2. Step 2: Convert to fraction form
    833.60/1,250.40 = 443.46/x
  3. Step 3: Cross multiply
    833.60x = 1,250.40 × 443.46
  4. Step 4: Simplify right side
    833.60x = 554,502.38
  5. Step 5: Solve for x
    x = 554,502.38/833.60
  6. Step 6: Final answer
    x = 665.19

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.